464  
FZUS54 KHGX 192033  
CWFHGX  
 
COASTAL WATERS FORECAST FOR TEXAS  
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX  
333 PM CDT MON MAY 19 2025  
 
UPPER TEXAS COASTAL WATERS FROM HIGH ISLAND TO THE MATAGORDA SHIP  
CHANNEL OUT 60 NAUTICAL MILES INCLUDING GALVESTON AND MATAGORDA  
BAYS.  
 
SEAS ARE PROVIDED AS A RANGE OF THE AVERAGE HEIGHT OF THE HIGHEST  
1/3 OF THE WAVES...ALONG WITH THE OCCASIONAL HEIGHT OF THE  
AVERAGE HIGHEST 10 PERCENT OF THE WAVES.  
 
GMZ300-200945-  
SYNOPSIS FOR HIGH ISLAND TO THE MATAGORDA SHIP CHANNEL OUT  
60 NAUTICAL MILES INCLUDING GALVESTON AND MATAGORDA BAYS  
333 PM CDT MON MAY 19 2025  
 
.SYNOPSIS FOR HIGH ISLAND TO THE MATAGORDA SHIP CHANNEL OUT 60 NM  
INCLUDING GALVESTON AND MATAGORDA BAYS.  
 
MODERATE SOUTHEAST WINDS AMD ELEVATED SEAS WILL PERSIST THROUGH  
MOST OF THE NIGHT. WINDS AND SEAS ARE EXPECTED TO DECREASE ON  
TUESDAY AS A WEAKENING FRONTAL BOUNDARY APPROACHES. ISOLATED  
SHOWERS AND THUNDERSTORMS CANNOT BE RULED OUT LATE TUESDAY AND  
WEDNESDAY AS THE WEAK BOUNDARY SAGS CLOSER TO THE COAST. LIGHT TO  
OCCASIONALLY MODERATE WINDS ARE EXPECTED THROUGH THE REMAINDER OF  
THE WEEK.  
 

 
 
GMZ335-200945-  
GALVESTON BAY-  
333 PM CDT MON MAY 19 2025  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT TUESDAY
 
 
   
TONIGHT
 
SOUTH WINDS 20 TO 25 KNOTS. BAY WATERS CHOPPY TO ROUGH.   
TUESDAY
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY. A SLIGHT CHANCE OF SHOWERS WITH ISOLATED THUNDERSTORMS IN  
THE AFTERNOON.    
TUESDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS, EASING TO AROUND  
10 KNOTS LATE IN THE EVENING, VEERING TO NORTH AFTER MIDNIGHT.  
BAY WATERS SLIGHTLY CHOPPY, EASING TO SMOOTH IN THE LATE EVENING  
AND OVERNIGHT.    
WEDNESDAY
 
NORTHEAST WINDS AROUND 10 KNOTS, VEERING TO  
SOUTHEAST IN THE AFTERNOON. BAY WATERS SMOOTH TO SLIGHTLY CHOPPY.   
WEDNESDAY NIGHT
 
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS SMOOTH.    
THURSDAY
 
SOUTHEAST WINDS 5 TO 10 KNOTS. BAY WATERS SMOOTH.    
THURSDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS. BAY WATERS  
SMOOTH.    
FRIDAY
 
SOUTHEAST WINDS AROUND 10 KNOTS, RISING TO 10 TO  
15 KNOTS IN THE AFTERNOON. BAY WATERS SMOOTH, RISING TO SLIGHTLY  
CHOPPY IN THE AFTERNOON.    
FRIDAY NIGHT
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
SATURDAY
 
SOUTH WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
SATURDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. BAY WATERS  
SLIGHTLY CHOPPY.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
GMZ330-200945-  
MATAGORDA BAY-  
333 PM CDT MON MAY 19 2025  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT TUESDAY
 
 
   
TONIGHT
 
SOUTH WINDS 20 KNOTS, EASING TO AROUND 15 KNOTS LATE.  
BAY WATERS CHOPPY, EASING TO SLIGHTLY CHOPPY LATE.    
TUESDAY
 
SOUTH WINDS AROUND 10 KNOTS. BAY WATERS SMOOTH TO  
SLIGHTLY CHOPPY.    
TUESDAY NIGHT
 
SOUTH WINDS 5 TO 10 KNOTS, BACKING TO NORTHEAST  
LATE. BAY WATERS SMOOTH.    
WEDNESDAY
 
EAST WINDS 5 TO 10 KNOTS, VEERING TO SOUTHEAST IN  
THE AFTERNOON. BAY WATERS SMOOTH TO SLIGHTLY CHOPPY.    
WEDNESDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS. BAY WATERS  
SMOOTH.    
THURSDAY
 
SOUTHEAST WINDS AROUND 5 KNOTS, RISING TO AROUND  
10 KNOTS IN THE AFTERNOON. BAY WATERS SMOOTH, RISING TO SMOOTH TO  
SLIGHTLY CHOPPY IN THE AFTERNOON.    
THURSDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS. BAY WATERS  
SMOOTH.    
FRIDAY
 
SOUTHEAST WINDS AROUND 10 KNOTS, RISING TO 10 TO  
15 KNOTS IN THE AFTERNOON. BAY WATERS SMOOTH, RISING TO SLIGHTLY  
CHOPPY IN THE AFTERNOON.    
FRIDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. BAY WATERS  
SLIGHTLY CHOPPY.    
SATURDAY
 
SOUTHEAST WINDS 10 TO 15 KNOTS. BAY WATERS SLIGHTLY  
CHOPPY.    
SATURDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. BAY WATERS  
SLIGHTLY CHOPPY.  
 

 
 
GMZ350-355-200945-  
COASTAL WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX OUT  
20 NM-COASTAL WATERS FROM HIGH ISLAND TO FREEPORT TX OUT 20 NM-  
333 PM CDT MON MAY 19 2025  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT TUESDAY
 
 
   
TONIGHT
 
SOUTH WINDS 20 TO 25 KNOTS. SEAS 5 TO 7 FEET, OCCASIONALLY  
TO 9 FEET. WAVE DETAIL: SOUTHEAST 6 FEET AT 7 SECONDS.    
TUESDAY
 
SOUTH WINDS 10 TO 15 KNOTS. SEAS 4 TO 6 FEET,  
OCCASIONALLY TO 8 FEET. WAVE DETAIL: SOUTH 5 FEET AT 7 SECONDS. A  
SLIGHT CHANCE OF SHOWERS WITH ISOLATED THUNDERSTORMS LATE.    
TUESDAY NIGHT
 
SOUTH WINDS 5 TO 10 KNOTS, BACKING TO NORTHEAST  
LATE. SEAS 3 TO 4 FEET. WAVE DETAIL: SOUTHEAST 4 FEET AT  
7 SECONDS.    
WEDNESDAY
 
NORTHEAST WINDS AROUND 10 KNOTS, VEERING TO EAST IN  
THE AFTERNOON. SEAS AROUND 3 FEET. WAVE DETAIL: SOUTHEAST 3 FEET  
AT 7 SECONDS.    
WEDNESDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND  
3 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT 7 SECONDS.    
THURSDAY
 
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND 3 FEET IN  
THE MORNING, THEN AROUND 2 FEET OR LESS. WAVE DETAIL: SOUTHEAST  
3 FEET AT 7 SECONDS, BECOMING SOUTHEAST 2 FEET AT 6 SECONDS.    
THURSDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND  
2 FEET OR LESS.    
FRIDAY
 
SOUTHEAST WINDS AROUND 10 KNOTS, RISING TO 10 TO  
15 KNOTS IN THE AFTERNOON. SEAS AROUND 2 FEET OR LESS.    
FRIDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS AROUND  
3 FEET.    
SATURDAY
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS AROUND 3 FEET.    
SATURDAY NIGHT
 
SOUTHEAST WINDS 15 TO 20 KNOTS. SEAS 3 TO  
4 FEET.  
 
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
GMZ370-375-200945-  
WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX FROM 20 TO  
60 NM-WATERS FROM HIGH ISLAND TO FREEPORT TX FROM 20 TO 60 NM-  
333 PM CDT MON MAY 19 2025  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
 
 
   
TONIGHT
 
SOUTH WINDS 20 KNOTS. SEAS 6 TO 8 FEET, OCCASIONALLY  
TO 10 FEET. WAVE DETAIL: SOUTHEAST 6 FEET AT 7 SECONDS.    
TUESDAY
 
SOUTH WINDS 10 TO 15 KNOTS, EASING TO AROUND 10 KNOTS  
LATE. SEAS 4 TO 6 FEET, OCCASIONALLY TO 8 FEET. WAVE DETAIL:  
SOUTHEAST 6 FEET AT 7 SECONDS.    
TUESDAY NIGHT
 
SOUTH WINDS 5 TO 10 KNOTS, BACKING TO NORTHEAST  
LATE. SEAS 3 TO 4 FEET. WAVE DETAIL: SOUTHEAST 4 FEET AT  
7 SECONDS.    
WEDNESDAY
 
EAST WINDS 5 TO 10 KNOTS, VEERING TO SOUTHEAST LATE.  
SEAS 3 TO 4 FEET. WAVE DETAIL: SOUTHEAST 4 FEET AT 7 SECONDS.    
WEDNESDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND  
3 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT 7 SECONDS.    
THURSDAY
 
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND 3 FEET IN  
THE MORNING, THEN AROUND 2 FEET OR LESS. WAVE DETAIL: SOUTHEAST  
3 FEET AT 7 SECONDS, BECOMING SOUTHEAST 2 FEET AT 6 SECONDS.    
THURSDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND  
2 FEET OR LESS.    
FRIDAY
 
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET OR  
LESS.    
FRIDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS AROUND  
3 FEET.    
SATURDAY
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS AROUND 3 FEET.    
SATURDAY NIGHT
 
SOUTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO  
5 FEET.  
 

 
 
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